ANATOMY

Detailed explanation-1: -The primary function of transitional epithelium is to enable tissue to contract and expand. For example, the inner walls of the urinary bladder are lined with transitional epithelium, a tissue which enables the bladder to enlarge when the bladder is filled with urine.

Detailed explanation-2: -The transitional epithelium cells stretch readily in order to accommodate fluctuation of volume of the liquid in an organ (the distal part of the urethra becomes non-keratinized stratified squamous epithelium in females; the part that lines the bottom of the tissue is called the basement membrane).

Detailed explanation-3: -The transitional epithelial tissue of the urinary bladder acts like a water balloon. The ability of the cells of the transitional epithelium to stretch from round cells to thin, flat cells allows the urinary bladder to expand to hold more urine.

Detailed explanation-4: -Epithelial tissues are widespread throughout the body. They form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands. They perform a variety of functions that include protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception.